CN202202319U - Vacuum precompressing foundation processing device - Google Patents
Vacuum precompressing foundation processing device Download PDFInfo
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- CN202202319U CN202202319U CN2011202343775U CN201120234377U CN202202319U CN 202202319 U CN202202319 U CN 202202319U CN 2011202343775 U CN2011202343775 U CN 2011202343775U CN 201120234377 U CN201120234377 U CN 201120234377U CN 202202319 U CN202202319 U CN 202202319U
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- water draining
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Abstract
The utility model relates to the field of equipment for processing a foundation through a water sprinkling method, a water draining method, an air exhausting method or a blasting method. Particularly the utility model relates to a vacuum precompressing foundation processing device. The vacuum precompressing foundation processing device comprises an insulating layer (1) and is characterized in that: the vacuum precompressing foundation processing device further comprises a water draining plate (2), a straw mattress layer (3), draining branch pipes (4), a water draining main pipe (5), a vacuum pump (6), a protective layer (7) and a sealing layer (8); the insulating layer (1) is equipped on a soft soil layer; the water draining plate (2) is inserted into the soft soil layer; the straw mattress layer (3) is laid on the insulating layer (1); the water draining plate (2) is connected with the draining branch pipe (4); two ends of each row of the draining branch pipe (4) are respectively connected with one water draining main pipe (5); the water draining main pipe (5) is hermetically connected with an air inlet of the vacuum pump (6); the protective layer (7) and the sealing layer (8) are successively laid above the draining branch pipes (4) and the water draining main pipe (5). The vacuum precompressing foundation processing device has the following advantages: improved surface bearing force, reduced sandstone consumption and low reinforcing cost.
Description
Technical field
The utility model relates to watering, draining, bleeds or the basic apparatus field of blasting procedure processing, is specially a kind of vacuum preloading ground treating apparatus.
Background technology
Soft base processing method mainly contains: 1. preloading; 2. ram by force or the dynamic replacement method; 3. traditional vacuum preloading.Preloading mainly is to increase total stress, causes pore water pressure to increase, and produces ultra quiet hole pressure and makes soil body mesopore water discharge the soil body through drainage channel; Voids volume diminishes; The soil body is closely knit, has increased the shear strength of the soil body, has improved the bearing capacity and the stability of soft foundation.Dynamic compaction is that foundation soil is applied very big impact energy, and shock wave that in foundation soil, produces and dynamic stress can improve the intensity of foundation soil, the compressibilty of reduction soil.The traditional vacuum preloading is on the ground that needs reinforcement, to lay the horizontal drainage bed course, and vertical drain is set.Then, be embedded in below the airtight layer end face 50cm at least around it laying the plastic seal film on the horizontal drainage bed course and make, make it to isolate with atmospheric pressure.Adopt vacuum extractor (jet pump) to reduce then and be reinforced the ground pore water pressure, make effective stress increase in its ground, make the soil body obtain reinforcing.Above-mentioned three kinds of soft base processing methods all have certain scope of application.Wherein preloading is bigger to the demand of preloading material; Dynamic compaction is applicable to silt and the grounds such as cohesive soil, collapsible loess, miscellaneous fill and plain fill of handling gravelly soil, sand, low saturation; Can adopt the dynamic replacement method to grounds such as the silt of high saturation and cohesive soils, but bigger to the demand of building stones or coarse granule material; The traditional vacuum preloading needs the certain thickness sand cushion of first backfill to form the horizontal drainage passage, also needs a large amount of sand, simultaneously the surface is stream and moulds state; Water content is high; Compression coefficient is big, is the weak soil of the accumulation of mud recently of over-saturation state, and sand cushion backfill amount will more strengthen.In sum, above soft base processing method is all bigger to the demand of sandstone material, applies it in the over-saturation soft foundation, certainly will increase construction costs.
The utility model content
In order to overcome the defective of prior art, a kind of based process equipment that the scope of application is wide, the sandstone consumption is few, construction costs is low is provided, the utility model discloses a kind of vacuum preloading ground treating apparatus.
The utility model reaches goal of the invention through following technical scheme:
A kind of vacuum preloading ground treating apparatus comprises separation layer, and separation layer is composited by laying one deck non-woven geotextile on one deck nonwoven woven cloth; It is characterized in that: also comprise band drain, straw mattress layer, branch drain, leader drain, vacuum pump, topping and sealant, separation layer is laid on the weak soil layer, and band drain passes separation layer and inserts in the weak soil layer; Band drain is arranged with the mode of alignment in length and breadth; Lay the straw mattress layer on the separation layer between the band drain, connect with branch drain with the band drain of delegation and is connected, perforation is connected with a leader drain respectively at the two ends of each capable branch drain; The air inlet port of leader drain and vacuum pump is tightly connected; The top of branch drain and leader drain is laid topping and sealant successively, and topping is made up of one deck non-woven geotextile, and sealant is connect by the hot weldbonding of double-layer films and forms.
Described vacuum preloading ground treating apparatus is characterized in that: the degree of depth that band drain inserts the weak soil layer is 3m, and the spacing between the adjacent drainage channel plate is 0.7m, and the thickness of straw mattress layer is 15cm～25cm.
When the utility model uses, carry out as follows:
1. laying separation layer: on the weak soil layer, lay nonwoven establishment cloth, overlapping 20cm overlap joint re-lays one deck non-woven geotextile subsequently between the adjacent nonwoven woven cloth on the nonwoven woven cloth, nonwoven woven cloth and non-woven geotextile formation separation layer 1.The effect of nonwoven woven cloth on the one hand is to prevent that underground plant roots and stems or the rigid object do not removed completely under the negative pressure condition of bleeding, poking the diaphragm seal on upper strata.The wrench and the mud face of the band drain in the vertical insertion soil are isolated, quicken draining.The effect of non-woven geotextile is to prevent to gush on the mud, thereby guarantees that branch drain 4 is not vacuumized effect to guarantee the vacuum preloading effect by the shutoff influence.
2. artificial plate: an end of band drain entangles about 50cm by bamboo pole, and accurate subsequently stake position is inserted into designated depth, should guarantee the verticality of bamboo pole in the insertion process, and each band drain is arranged with the mode of alignment in length and breadth.Band drain is selected the Type B plastic draining board for use, and the degree of depth that band drain inserts the weak soil layer is 3m, and the spacing between the adjacent drainage channel plate is 0.7m.Band drain is as the vertical drainage passage.
3. lay the hay bed course: laying the straw mattress layer above the separation layer between the band drain, the thickness of straw mattress layer is at 15cm～25cm.The effect of straw mattress layer is to make the lateral transport of being convenient to vacuum in the vacuum preloading process.
4. layout vacuum tube: connect with branch drain with the band drain of delegation and to be connected; The two ends of each row branch drain connect with a leader drain respectively and are connected; The air inlet port of leader drain and vacuum pump is tightly connected, and branch drain adopts ripple infiltration type polyvinyl chloride pipe, and the band drain exposed parts is swathed on branch drain; Band drain swathes after the twice along on the non-woven geotextile of separation layer, is beneficial to the transmission of vacuum.
5. laying topping: above branch drain and leader drain, lay topping, topping is made up of one deck non-woven geotextile.
6. laying sealant; Sealant is connect by the hot weldbonding of double-layer films and forms, and film generally selects for use polyvinyl or polyvinyl chloride to process, overlapping 1.5cm between the adjacent film～2cm overlap joint, and lap-joint's desired strength is high, and tightness is good.
Before laying sealant, should remove surface irregularities earlier, wait to have buried underground vacuum meter gauge head and other observation instruments and suction pump in place after; Two-layer diaphragm seal is laid covering whole construction zone, around the sealant enough ultra spacious and comfortable amounts should be arranged, be generally 3m～5m; Excavation sealing ditch around sealant; The degree of depth of sealing ditch is 1m, subsequently with imbedding around the sealant in the sealing ditch, again with mud, clay backfilling sealing ditch and compacting.
Sketch map is following:
7. connect the vacuum jet system: leader drain connects sebific duct, and sebific duct passes topping and is connected the connection of vacuum jet system with sealant through going out film device.The connection that goes out film device must be firmly, and sealing must be reliable.The installation of vacuum pump connects in strict accordance with the order of motor or diesel engine, water pump, cyclic water tank, gate valve, flap valve, film outlet port, and the junction seals with rubber pad, glass cement etc.Inspection sealing situation, inspection vacuum equipment and each connector guarantee sealing, guarantee tightness.
8. vacuum preloading: start vacuum pump, vacuum can reach below the 80kPa under the sealant in vacuum pre-press reinforcing district, vacuumize continuously after two months, sedimentation meet design requirement or standard after, can reduce pressure piecemeal until stopping to vacuumize the examination of handing over.
The beneficial effect of the utility model is: the utility model belongs to the characteristic that stream is moulded shape according to new hydraulically filled sludge, moulds the moisture content that the shape new hydraulically filled sludge forces to adjust the soil body through this system's convection current; The utility model makes stream mould shape mud through the negative-pressure sealing technology and changes into the soft shape of moulding, and obvious raising of 1.0m～1.5m bearing capacity reaches technical requirement on the top layer; The utility model has been reformed the traditional vacuum precompressed needs the 50cm sand cushion as sand filter blanket; And adopt the construction technology of straw mattress layer replacement, guaranteed to reach the effect of vacuum preloading, simultaneously without sand cushion; Owing to directly plastic draining board in the soft base and vacuum tube are linked; Significantly reduce the linear loss that vacuum pressure transmits, improved vacuum and transmitted usefulness and consolidation effect, reached the purpose that reduces the reinforcing expense.
Description of drawings
Fig. 1 is that the utility model is accomplished to the structural representation of arranging behind the vacuum tube;
Fig. 2 is that the utility model is accomplished to the structural representation of laying sealant behind the sealant, topping, leader drain;
Generalized section when Fig. 3 is the utility model vacuum preloading.
The specific embodiment
Below further specify the utility model through specific embodiment.
Embodiment 1
A kind of vacuum preloading ground treating apparatus; Comprise separation layer 1, band drain 2, straw mattress layer 3, branch drain 4, leader drain 5, vacuum pump 6, topping 7 and sealant 8, shown in figure～figure, concrete structure is: separation layer 1 is composited by laying one deck non-woven geotextile on one deck nonwoven woven cloth; Separation layer 1 is laid on the weak soil layer; Band drain 2 passes separation layer 1 and inserts in the weak soil layer, and band drain 2 is arranged with the mode of alignment in length and breadth, lays straw mattress layer 3 on the separation layer 1 between the band drain 2; Connect with branch drain 4 with the band drain 2 of delegation and to be connected; The two ends of each row branch drain 4 connect with a leader drain 5 respectively and are connected, and the air inlet port of leader drain 5 and vacuum pump 6 is tightly connected, and the top of branch drain 4 and leader drain 5 is laid topping 7 and sealant 8 successively; Topping is made up of one deck non-woven geotextile, and sealant 8 is connect by the hot weldbonding of double-layer films and forms.
The degree of depth that band drain 2 inserts the weak soil layer is 3m, and the spacing between the adjacent drainage channel plate 2 is 0.7m, and the thickness of straw mattress layer 3 is 15cm～25cm, and the thickness of present embodiment straw mattress layer 3 is 20cm.
When present embodiment uses, carry out as follows:
1. laying separation layer: on the weak soil layer, lay nonwoven establishment cloth, overlapping 20cm overlap joint re-lays one deck non-woven geotextile subsequently between the adjacent nonwoven woven cloth on the nonwoven woven cloth, nonwoven woven cloth and non-woven geotextile formation separation layer 1.The effect of nonwoven woven cloth on the one hand is to prevent that underground plant roots and stems or the rigid object do not removed completely under the negative pressure condition of bleeding, poking the diaphragm seal on upper strata.The wrench and the mud face of the band drain in the vertical insertion soil are isolated, quicken draining.The effect of non-woven geotextile is to prevent to gush on the mud, thereby guarantees that branch drain 4 is not vacuumized effect to guarantee the vacuum preloading effect by the shutoff influence.
2. artificial plate: an end of band drain 2 entangles about 50cm by bamboo pole, and accurate subsequently stake position is inserted into designated depth, should guarantee the verticality of bamboo pole in the insertion process, and each band drain 2 is arranged with the mode of alignment in length and breadth.Band drain 2 is selected the Type B plastic draining board for use, and the degree of depth that band drain 2 inserts the weak soil layer is 3m, and the spacing between the adjacent drainage channel plate 2 is 0.7m.Band drain 2 is as the vertical drainage passage.
3. lay the hay bed course: laying straw mattress layer 3 above the separation layer 1 between the band drain 2, the thickness of straw mattress layer 3 is at 15cm～25cm.The effect of straw mattress layer 3 is to make the lateral transport of being convenient to vacuum in the vacuum preloading process.
4. layout vacuum tube: connect with branch drain 4 with the band drain 2 of delegation and to be connected; The two ends of each row branch drain 4 connect with a leader drain 5 respectively and are connected; The air inlet port of leader drain 5 and vacuum pump 6 is tightly connected, and branch drain 4 adopts ripple infiltration type polyvinyl chloride pipe, and band drain 2 exposed parts are swathed on branch drain 4; Band drain 2 swathes after the twice along on the non-woven geotextile of separation layer 1, is beneficial to the transmission of vacuum.It is following to connect sketch map:
5. laying topping: above branch drain 4 and leader drain 5, lay topping 7, topping is made up of one deck non-woven geotextile.
6. laying sealant; Sealant 8 is connect by the hot weldbonding of double-layer films and forms, and film generally selects for use polyvinyl or polyvinyl chloride to process, overlapping 1.5cm between the adjacent film～2cm overlap joint, and lap-joint's desired strength is high, and tightness is good.
Before laying sealant 8, should remove surface irregularities earlier, wait to have buried underground vacuum meter gauge head and other observation instruments and suction pump in place after; Two-layer diaphragm seal is laid covering whole construction zone, around the sealant 8 enough ultra spacious and comfortable amounts should be arranged, be generally 3m～5m; Excavation sealing ditch 10 around sealant 8; The degree of depth of sealing ditch 10 is 1m, subsequently with imbedding around the sealant 8 in the sealing ditch 10, again with mud, clay backfilling sealing ditch 10 and compacting.
Sketch map is following:
7. connect the vacuum jet system: leader drain 5 connects sebific ducts, and sebific duct passes topping 7 and is connected the connection of vacuum jet system with sealant 8 through going out film device.The connection that goes out film device must be firmly, and sealing must be reliable.The installation of vacuum pump connects in strict accordance with the order of motor or diesel engine, water pump, cyclic water tank, gate valve, flap valve, film outlet port, and the junction seals with rubber pad, glass cement etc.Inspection sealing situation, inspection vacuum equipment and each connector guarantee sealing, guarantee tightness.
8. vacuum preloading: start vacuum pump 6, the 8 times vacuums of sealant in the vacuum pre-press reinforcing district can reach below the 80kPa, vacuumize continuously after two months, sedimentation meet design requirement or standard after, can reduce pressure piecemeal until stopping to vacuumize the examination of handing over.
Claims (2)
1. vacuum preloading ground treating apparatus; Comprise separation layer (1), separation layer (1) is composited by laying one deck non-woven geotextile on one deck nonwoven woven cloth, it is characterized in that: also comprise band drain (2), straw mattress layer (3), branch drain (4), leader drain (5), vacuum pump (6), topping (7) and sealant (8); Separation layer (1) is laid on the weak soil layer; Band drain (2) passes separation layer (1) and inserts in the weak soil layer, and band drain (2) is arranged with the mode of alignment in length and breadth, and separation layer (1) is gone up and laid straw mattress layer (3) between the band drain (2); Connect with branch drain (4) with the band drain (2) of delegation and to be connected; The two ends of each row branch drain (4) connect with a leader drain (5) respectively and are connected, and the air inlet port of leader drain (5) and vacuum pump (6) is tightly connected, and the top of branch drain (4) and leader drain (5) is laid topping (7) and sealant (8) successively; Topping is made up of one deck non-woven geotextile, and sealant (8) is connect by the hot weldbonding of double-layer films and forms.
2. vacuum preloading ground treating apparatus as claimed in claim 1 is characterized in that: the degree of depth that band drain (2) inserts the weak soil layer is 3m, and the spacing between the adjacent drainage channel plate (2) is 0.7m, and the thickness of straw mattress layer (3) is 15cm～25cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202343775U CN202202319U (en) | 2011-07-05 | 2011-07-05 | Vacuum precompressing foundation processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202343775U CN202202319U (en) | 2011-07-05 | 2011-07-05 | Vacuum precompressing foundation processing device |
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| Publication Number | Publication Date |
|---|---|
| CN202202319U true CN202202319U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202343775U Expired - Fee Related CN202202319U (en) | 2011-07-05 | 2011-07-05 | Vacuum precompressing foundation processing device |
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| CN (1) | CN202202319U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704463A (en) * | 2012-06-27 | 2012-10-03 | 河海大学 | Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation |
| CN104452736A (en) * | 2014-12-05 | 2015-03-25 | 水利部交通运输部国家能源局南京水利科学研究院 | Intermittent vacuum precompression device and soft foundation treatment method of intermittent vacuum precompression device |
| CN104563091A (en) * | 2014-12-24 | 2015-04-29 | 宁波高新区围海工程技术开发有限公司 | Structure and method for processing consolidation of water pumping and air exhausting soft foundation |
| CN106638453A (en) * | 2017-01-05 | 2017-05-10 | 天津大学 | Vacuum preloading indoor test model without vacuum membrane |
| CN111236205A (en) * | 2020-01-10 | 2020-06-05 | 深圳市蛇口招商港湾工程有限公司 | Soft soil foundation vacuum preloading construction structure and construction method thereof |
| CN112962386A (en) * | 2021-02-10 | 2021-06-15 | 索新科技(北京)有限公司 | ADG steel floor unit and laying method thereof |
-
2011
- 2011-07-05 CN CN2011202343775U patent/CN202202319U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704463A (en) * | 2012-06-27 | 2012-10-03 | 河海大学 | Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation |
| CN102704463B (en) * | 2012-06-27 | 2015-02-18 | 河海大学 | Vacuum pre-compaction and electro-osmosis combined reinforcing device and method for muck foundation |
| CN104452736A (en) * | 2014-12-05 | 2015-03-25 | 水利部交通运输部国家能源局南京水利科学研究院 | Intermittent vacuum precompression device and soft foundation treatment method of intermittent vacuum precompression device |
| CN104563091A (en) * | 2014-12-24 | 2015-04-29 | 宁波高新区围海工程技术开发有限公司 | Structure and method for processing consolidation of water pumping and air exhausting soft foundation |
| CN106638453A (en) * | 2017-01-05 | 2017-05-10 | 天津大学 | Vacuum preloading indoor test model without vacuum membrane |
| CN111236205A (en) * | 2020-01-10 | 2020-06-05 | 深圳市蛇口招商港湾工程有限公司 | Soft soil foundation vacuum preloading construction structure and construction method thereof |
| CN111236205B (en) * | 2020-01-10 | 2021-09-07 | 深圳市蛇口招商港湾工程有限公司 | Soft soil foundation vacuum preloading construction structure and construction method thereof |
| CN112962386A (en) * | 2021-02-10 | 2021-06-15 | 索新科技(北京)有限公司 | ADG steel floor unit and laying method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20200705 |
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| CF01 | Termination of patent right due to non-payment of annual fee |